/* 全局样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Arial', 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
    padding: 20px;
}

/* 页面标题和描述 */
header {
    text-align: center;
    margin-bottom: 40px;
    padding: 20px;
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

header h1 {
    color: #2c3e50;
    margin-bottom: 10px;
}

/* 主容器样式 */
main {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 30px;
}

/* 卡片容器 */
.card-container {
    width: 100%;
    max-width: 350px;
    background-color: #fff;
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    text-align: center;
}

.card-container h2 {
    font-size: 20px;
    margin-bottom: 20px;
    color: #2c3e50;
    border-bottom: 1px solid #eee;
    padding-bottom: 10px;
}

.card-wrapper {
    width: 100%;
    min-height: 300px;
    display: flex;
    justify-content: center;
    align-items: center;
}

/* 页脚样式 */
footer {
    margin-top: 50px;
    text-align: center;
    padding: 20px;
    color: #7f8c8d;
    font-size: 14px;
}

/* 响应式设计 */
@media (max-width: 768px) {
    main {
        flex-direction: column;
        align-items: center;
    }
    
    .card-container {
        max-width: 100%;
    }
}
